﻿// The MIT License(MIT)
//
// Copyright(c) 2021 Alberto Rodriguez Orozco & LiveCharts Contributors
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.

#if IOS || MACCATALYST

// reachable on maui ios/catalys or uno ios/catalyst (without skia renderer)

using CoreAnimation;
using Foundation;
using LiveChartsCore.Motion;

namespace LiveChartsCore.Native;

internal partial class NativeFrameTicker : IFrameTicker
{
    private IRenderMode _renderMode = null!;
    private CoreMotionCanvas _canvas = null!;
    private CADisplayLink _displayLink = null!;

    public void InitializeTicker(CoreMotionCanvas canvas, IRenderMode renderMode)
    {
        _canvas = canvas;
        _renderMode = renderMode;
        _displayLink = CADisplayLink.Create(OnFrameTick);
        _displayLink.AddToRunLoop(NSRunLoop.Main, NSRunLoopMode.Common);

        _canvas.Invalidated += OnCoreInvalidated;

        CoreMotionCanvas.s_tickerName = "CADisplayLink iOS/Catalyst";
    }

    private void OnCoreInvalidated(CoreMotionCanvas obj) =>
        _renderMode.InvalidateRenderer();

    private void OnFrameTick()
    {
        if (_canvas.IsValid) return;
        _renderMode.InvalidateRenderer();
    }

    public void DisposeTicker()
    {
        _canvas.Invalidated -= OnCoreInvalidated;

        _canvas = null!;
        _renderMode = null!;
        _displayLink.Invalidate();
        _displayLink.Dispose();
        _displayLink = null!;
    }
}

#endif
